Home / 643,811,240.88-888,480,945.88-361,603,336.16

Finding the Fourth Proportional to 643,811,240.88, 888,480,945.88 and 361,603,336.16

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Solution

The fourth proportional to 643,811,240.88, 888,480,945.88 and 361,603,336.16 is: 499,024,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,811,240.88 : 888,480,945.88 = 361,603,336.16 : x
  2. Step 2: Convert to fraction form
    643,811,240.88/888,480,945.88 = 361,603,336.16/x
  3. Step 3: Cross multiply
    643,811,240.88x = 888,480,945.88 × 361,603,336.16
  4. Step 4: Simplify right side
    643,811,240.88x = 321,277,674,144,800,448
  5. Step 5: Solve for x
    x = 321,277,674,144,800,448/643,811,240.88
  6. Step 6: Final answer
    x = 499,024,642.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.